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A monocular night vision device, as the name suggests, is a single-eye (using only one eye) night vision device. It is the most common and basic form of night vision device, typically resembling a short telescope or a large SLR camera lens.

Yuanjin Optics has developed advanced laser bird repellents, which serve as a powerful complement to airport and orchard bird repellents. These devices play a vital role in ensuring flight safety and protecting a good harvest.

"Third-generation night vision devices" refer to night vision devices whose core component—the image intensifier—uses third-generation technology. Its most significant feature is the use of a gallium arsenide photocathode and an ion barrier film, resulting in performance far exceeding that of the previous two generations.

The core principle of digital night vision goggles is similar to that of digital cameras. Digital night vision goggles use infrared-sensitive CMOS or CCD image sensors to capture low ambient light (including invisible infrared light).

A rangefinder telescope is used to measure the distance between the observer and the target.